00:01
First of all, what is a mutation? a mutation is an alteration in a nucleic acid sequence of the genome of an organism or an extra chromosome of dna.
00:11
So basically, if there's any nucleic acid sequence alteration, we call it a mutation.
00:18
There are different kind of mutations.
00:22
The example of mutations include the deletion of nucleotide, desertion of nucleotide, substitution, duplication, or translocution.
00:30
So any alteration of nucleotide are considered as mutations.
00:37
So let's look at all the options.
00:40
A, an inherited change in dna sequence.
00:44
Well, this is not the correct answer because only some of the mutations can be hereditary, which means they are passed from a parent to an offspring.
00:56
But not all of them.
00:57
A lot of times mutations happen from 10 years.
01:00
During dna replication.
01:03
In the same generation, usually it is caused by the failed dna proofreading, and they do not come from parents, so they are not inherited.
01:11
Example would be like when someone developed cancer a lot of time during dna replication, an oncogene has a mutation so that cell proliferate without control.
01:24
But this is not a corrective.
01:27
B, an inherited change in dna sequence that is always very, for an organism.
01:34
So first of all, again, mutation is not always an inherited change.
01:39
And second, mutations are not always bad...